Means for utilizing exhaust steam from engines



July 13, 1926.1 1,591,993

' C. E. NORDQUIST MEANS FOR UTILIZING EXHAUST STEAM FROM ENGINES Filed August 28, 1922 Z I l Mrwssses L Rd. WSW? iii-res Patented July 13, 1 926.

CHARLES E. NORDQUIST, OF SOUTH CONNELLSVILLE, PENNSYLVANIA.

MEANS FOR UTILIZING- EXHAUST STEAM FROM ENGINES.

Application filed. August 28, 1922.

The present invention relates to means for utilizing the exhaust steam in conjunction with a steam engine and a boiler therefor. The principal object of the invention is to design an apparatus of this nature which may be applied to the boiler of a locomotive so that a greater number of units of heat may be utilized than is possible with the apparatus now commonly in use. 7

Another important object of the invention is to provide an apparatus of this nature which will be exteremely simple and efiicient in construction and operation, reliable, and well adapted to the purpose for which it is designed.

With the above and numerous other objects in view as will appear as the description progresses, the invention resides in certain novel features of construction, and the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawings Figure 1 is a'diagrammatic view of the apparatus embodying my invention,

Figure 2 is an enlarged fragmentary detail view, partly in section, showing the ejector, and

. Figure 3 is a view similar to Figure 2 showing the injector.

Referring to the structure shown in Figure 1, it will be seen that the exhaust steam passes from the steam cylinder to exhaust cavity and to the exhaust pipe 2 which is in communication with a live steam pipe 3 as at 4 and beyond this point there is provided an ejector 5 which may be of any well known orpreferred form and which is in communication with the water supply pipe 6 leading from a supply of water 7 A valve 8 is situated in the water supply pipe 6 be ing controlled by the rod 9. A valve 10 is disposed in the continuation 11 of the exhaust pipe 2 and is controllable by a rod 12. This continuation l1 communicates with the heating coil 13 through an injector 14 of conventional form which also communicates with the steam pipe 16 which is tapped into and leads superheated steam from the dry pipe between the usual superheater'and the engine 1. It will, therefore, be seen that the exhaust steam may pass through the pipe 2 and a supply of live steam may be in ected therein from the pipe 3 and if the Serial No. 584,773.

valve 8 is open the ejector 5 will mix the steam with a supply of water and deliver the same through the extension 11 through the injector 14., at which time superheated steam will be delivered thereto from pipe 16 and the final mixture will be forced into the heating coil 13 and into the boiler as will be readily understood. Of course if the valve 10 is opened and the valve 18 closed and also the valve 8 closed, the exhaust steam ation of the ejector 5 whereby the feed water,

is drawn from the pipe 6 and forced through the continuation 11 to the injector 1 1. This results in slightly heating the water due to mixing of the exhaust steam therewith, and by opening valve 18, live steam may be used in conjunction with the exhaust steam for enhancing the operation of the ejector 5 and heating the Water to a higher degree, if found necessary or desirable. The superheated steam flows at a high velocity through the nozzle of injector 14 from pipe 16 and thereby forces the water thus heated through the heating coil 13 and injects it into the boiler, such water being heated to a higher degree by the superheated steam which is thus mixed therewith. In practice, the coil 13 will be clamped against the boiler and suitably encased so that the water passing therethrough will be further finally heated before entering the boiler due to subjection of the coil 13 to the heat of the boiler. It is thus apparent that the water is gradually raised in temperature in passing to the boiler so that undesirable and detrimental sudden temperature changes are avoided, while, at the same time, the feed water is heated to a comparatively high degree when it passes into the boiler so that it is then readily converted into steam. WVhen the locomotive is not in motion, the feeding and heating of water is accomplished in the same way except that as no exhaust steam is available, the ejector 5 is operated solely by live steam from pipe It is thought that the construction and operation of the invention will be readily understood without a more detailed descrip tion. It is desired to point out, however, that the form of the invention which I have disclosed refers merely to the preferred embodiment, and that numerous changes in the details of construction and in the combination and arrangement of parts may be resorted .to without departing from the scope of the invention as hereinafter claimed.

Having thus described my invention what I claim as new is 1. In combination, a steam boiler, a source of exhaust steam, a pipe for conducting the exhaust steam, an ejector in said pipe, a

source of water, a pipe communicating with the ejector from said source ofv water, valve controlled means for delivering live steam from the boiler into the exhaust pipe before water is delivered thereinto, and a heating coil communicating with said exhaust pipe and with the steam boiler, a superheatedsteam conducting pipe and an injector in I operative relation to said superheated-steam conducting pipe for injecting the water from the ejector through the heating coil into the boiler.

2. In combination, a steam of exhaust steam, a pipe exhaust steam, an ejector in said pipe, a source of water, a pipe communicating with the ejector from said source of water, valve controlled means for delivering live steam from the boiler into the exhaust pipe before water is delivered thereinto, and a heating coil communicating with said exhaust pipe and with the steam boiler, a superheatedsteam conducting pipe and an injector in operative relation to said superheatedesteam conducting pipe for injecting the water from the ejector through the heating coil into the boiler, a pipe communicating with the exhaust steam conducting pipe between the ejector and the injector and opening to the atmosphere, and valves for the exhaust steam and water conducting pipes whereby the exhaust steam may be diverted to the atmosphere and the flow of live steam and water shut off.

In testimony whereof I afiix my signature.

CHARLES E. NORDQUIST.

boiler, a source for conducting the 

